Results 51 to 60 of about 33,635 (203)

Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data

, 2019
We measure cosmic weak lensing shear power spectra with the Subaru Hyper Suprime-Cam (HSC) survey first-year shear catalog covering 137deg$^2$ of the sky.
Aihara, Hiroaki, Armstrong, Robert, Bosch, James, Coupon, Jean, Ducout, Anne, Hamana, Takashi, Hikage, Chiaki, Ho, Paul, Hsieh, Bau-Ching, Komiyama, Yutaka, Köhlinger, Fabian, Lanusse, François, Leauthaud, Alexie, Lupton, Robert H., Mandelbaum, Rachel, Medezinski, Elinor, Mineo, Sogo, Miyama, Shoken, Miyatake, Hironao, Miyazaki, Satoshi, More, Surhud, Murata, Ryoma, Murayama, Hitoshi, Nishizawa, Atsushi J., Oguri, Masamune, Shirasaki, Masato, Sifón, Cristóbal, Simet, Melanie, Speagle, Joshua, Spergel, David N., Strauss, Michael A., Sugiyama, Naoshi, Takada, Masahiro, Tanaka, Masayuki, Utsumi, Yousuke, Wang, Shiang-Yu, Yamada, Yoshihiko   +36 more
core   +1 more source

Integrating simultaneous interfacial shear rheology with neutron reflectometry for structural and dynamic analysis of fluid interfacial systems

Journal of Applied Crystallography, EarlyView.
We present a new setup at the FIGARO horizontal neutron reflectometer enabling simultaneous measurement of the structural and mechanical properties of liquid interfaces, combining neutron reflectometry with interfacial shear rheology.The study of the structure and mechanical properties of complex fluid interfaces has attracted growing interest in ...
Pablo Sánchez-Puga, Javier Tajuelo, Javier Carrascosa-Tejedor, Miguel Ángel Rubio, Philipp Gutfreund, Armando Maestro   +5 more
wiley   +1 more source

Illuminating dark energy with cosmic shear

Physical Review D, 2005
One of the principal goals of modern cosmology is to constrain the properties of dark energy. At present, numerous surveys are aiming to determine the equation of state, which is assumed constant due to our poor understanding of its behaviour (and since higher order parameterisations lead to unwieldy errors).
Simpson, Fergus, Bridle, Sarah
openaire   +2 more sources

The DECADE cosmic shear project IV: cosmological constraints from 107 million galaxies across 5,400 deg$^2$ of the sky

The Open Journal of Astrophysics
We present cosmological constraints from the Dark Energy Camera All Data Everywhere (DECADE) cosmic shear analysis. This work uses shape measurements for 107 million galaxies measured through Dark Energy Camera (DECam) imaging of $5,\!412$ deg$^2$ of sky
D. Anbajagane, C. Chang, A. Drlica-Wagner, C. Y. Tan, M. Adamow, R. A. Gruendl, L. F. Secco, Z. Zhang, M. R. Becker, P. S. Ferguson, N. Chicoine, K. Herron, A. Alarcon, R. Teixeira, D. Suson, A. N. Alsina, A. Amon, F. Andrade-Oliveira, J. Blazek, C. R. Bom, H. Camacho, J. A. Carballo-Bello, A. Carnero Rosell, R. Cawthon, W. Cerny, A. Choi, Y. Choi, S. Dodelson, C. Doux, K. Eckert, J. Elvin-Poole, J. Esteves, M. Gatti, G. Giannini, W. G. Hartley, D. Gruen, K. Herner, E. M. Huff, D. J. James, M. Jarvis, E. Krause, N. Kuropatkin, C. E. Martínez-Vázquez, P. Massana, S. Mau, J. McCullough, G. E. Medina, B. Mutlu-Pakdil, J. Myles, M. Navabi, N. E. D. Noël, A. B. Pace, A. Porredon, J. Prat, M. Raveri, A. H. Riley, E. S. Rykoff, J. D. Sakowska, S. Samuroff, D. Sanchez-Cid, D. J. Sand, L. Santana-Silva, I. Sevilla-Noarbe, T. Shin, M. Soares-Santos, G. S. Stringfellow, C. To, A. Tong, M. A. Troxel, A. K. Vivas, M. Yamamoto, B. Yanny, B. Yin, Y. Zhang, J. Zuntz   +74 more
doaj   +1 more source

Cosmic Shears Should Not Be Measured In Conventional Ways [PDF]

, 2011
A long standing problem in weak lensing is about how to construct cosmic shear estimators from galaxy images. Conventional methods average over a single quantity per galaxy to estimate each shear component.
Bacon, Bernstein, Bernstein, Bonnet, Bridle, Bridle, Bridle, Eiichiro Komatsu, Erben, Heymans, Hoekstra, Hoekstra, Jun Zhang, Kaiser, Kaiser, Luppino, Massey, Massey, Nakajima, Press, Refregier, Refregier, Rhodes, Tyson, Voigt, Weinberg, Zhang, Zhang   +27 more
core   +1 more source

When Thriving for More Collapses the System: The Academic Reproduction of Uncaring Structures

British Journal of Management, EarlyView.
Abstract This essay argues that the widening gap between aspirational aims and visionary orientations and the prevailing practices in neoliberal academia stems from deeper, historically rooted, market‐based logics shaping our institutions, increasingly governed by economic values and academic subjectivities therein.
Lara Pecis, Florian Bauer
wiley   +1 more source

3D Weak Gravitational Lensing of the CMB and Galaxies [PDF]

, 2015
In this paper we present a power spectrum formalism that combines the full three-dimensional information from the galaxy ellipticity field, with information from the cosmic microwave background (CMB).
Das, S., Heavens, A. F., Kitching, T. D.
core   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Testing f(R) Gravity from Cosmic Shear Measurements

The Astrophysical Journal
In this work, we perform a detailed analysis to constrain the Hu–Sawicki f ( R ) gravity model, using cosmic shear data from three prominent Stage-III weak lensing surveys: Dark Energy Survey Year 3, KiDS-1000, and Hyper Suprime-Cam Year 3. To accurately
Jiachen Bai, Jun-Qing Xia, Gong-Bo Zhao
doaj   +1 more source

On the degeneracies between baryons, massive neutrinos, and $f(R)$ gravity in Stage IV cosmic shear analyses

The Open Journal of Astrophysics, 2023
Modelling nonlinear structure formation is essential for current and forthcoming cosmic shear experiments. We combine the halo model reaction formalism, implemented in the REACT code, with the COSMOPOWER machine learning emulation platform, to develop ...
Alessio Spurio Mancini, Benjamin Bose
doaj   +1 more source